TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1933 SUBJECT: GRB030226: Optical observations at Asiago DATE: 03/03/07 00:16:05 GMT FROM: Elisabetta Maiorano at U.of Bologna,Italy E. Maiorano (Univ. Bologna & IASF/CNR, Bologna), N. Masetti, E. Palazzi (IASF/CNR, Bologna), H. Navasardyan (INAF - Astron. Obs. of Asiago), E. Pian (INAF - Astron. Obs. of Trieste), L.A. Antonelli (INAF - Astron. Obs. of Rome) and D. Malesani (SISSA, Trieste), on behalf of a larger Italian collaboration, report: "We have obtained BVRI images of the OT (Fox et al., GCN 1879) of GRB030226 (Suzuki et al., GCN 1888) with the 1.82-m "Copernico" telescope (plus AFOSC) of the Astronomical Observatory of Asiago (Italy). Observations started on February 26.947 UT, i.e. 0.79 days after the GRB. The seeing ranged between 2.0 and 2.4 arcsec. The OT is well detected in all bands; we measure for it the following BVRI magnitudes with respect to stars A and B (Garvanich et al., GCN 1885) and using the photometry by Henden (GCN 1916): mid-exposure exptime filter mag err time (UT) (s) ------------------------------------------------------- Feb. 26.961 2x1200 B 21.03 0.04 Feb. 26.987 2x900 V 20.76 0.02 Feb. 27.030 2x600 R 20.47 0.03 Feb. 27.078 2x600 I 20.24 0.06 This message is citeable." [GCN OPS NOTE (06mar03): This Circular was delayed 6.3 hours due to an address change by the submitter.]